spacetime

Here's a brain teaser for you: scientists are suggesting spacetime may be made out of individual "spacetime pixels" instead of being smooth and continuous.

Space and Stuff

What is gravity itself actually made of?

Scientists Say the Universe Itself May Be “Pixelated”

For the first time ever, researchers were able to catch space-time crystals on camera using a transmission X-ray microscope.

Woah.

A Breakthrough: Actual Video of a Time Crystal

A new mission plans to determine once and for all whether spacetime is a smooth fabric or a chunky mess of discrete units.

Smooth Spreading

They want to probe the fabric of our universe.

Satellite Mission Will Investigate Whether Reality Is Pixelated

A new model for backwards time travel debunks one of the main reasons scientists assumed it was possible. But that doesn't make it any easier.

Don't Need Roads

A time machine wouldn't need to have negative mass, as many physicists believe.

A New Model Debunks a Popular Argument Against Time Travel

“Given that we don’t know what happens past the Cauchy horizon, it could be crazy things as long as they’re mathematically possible."

Here’s How You Could Survive Being Sucked Into a Black Hole

Time travel is much more than a dream. It's science. 

We Can’t Alter The Flow of Time But, According to Physics, We Can Bend It

All of your dreams about time travel are about to be squashed. 

The Physics of Time: Why Time Travel May Be Impossible

In a new paper, a Stanford theoretical physicist shows that there may be a way to link general relativity and quantum mechanics.

This New Equation Could Unite The Two Biggest Theories in Physics